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dart
/
sdk.git
/
cd65076031d67dde752af5a4b8fe0224f9d2b5fb
/
.
/
pkg
/
front_end
/
parser_testcases
/
nnbd
/
issue_39723_prime.dart
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class
A
{
operator
[](
int
index
)
=>
index
;
}
main
()
{
A
?
a
=
null
;
(
a
!)?.
toString
();
(
a
!)?.[
42
];
(
a
!)?[
42
];
(
a
!)
?
[
42
];
}